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Mental retardation disorders

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Mental retardation disorders Mental retardation (MR) is a generalized disorder appearing before adulthood, characterized by significantly impaired cognitive functioning and deficits in two or more adaptive behaviors. It has historically been defined as an Intelligence Quotient score under 70.

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Mental retardation IQ MR Learning Disability 70-85 Milder MR 50-70 Middle MR35-50 Grave MR